Path: utzoo!mnetor!uunet!lll-winken!lll-lcc!ames!umd5!brl-adm!brl-smoke!gwyn
From: gwyn@brl-smoke.ARPA (Doug Gwyn )
Newsgroups: comp.lang.c
Subject: Re: comma operator
Message-ID: <7120@brl-smoke.ARPA>
Date: 18 Jan 88 01:26:56 GMT
References: <3819@sigi.Colorado.EDU> <5080013@hpfcdc.HP.COM>
Reply-To: gwyn@brl.arpa (Doug Gwyn (VLD/VMB) <gwyn>)
Organization: Ballistic Research Lab (BRL), APG, MD.
Lines: 7

In article <5080013@hpfcdc.HP.COM> boemker@hpfcdc.HP.COM (Tim Boemker) writes:
>... Why can't I write it the "obvious" way?

Observe the extra semicolon you would get, which would make the following
"else" invalid syntax (or perhaps it would link up with the wrong "if").

By the way, I don't think there IS a good way to write a generic swap
macro.  Didn't we go over this about a year ago?